We provide 18 3D Earth structures on a global grid. This supplementary material of the manuscript includes (1) 18 netcdf files of the 3D Earth structures and (2) 72 figures that visualize the lithospheric thickness, lateral average viscosity of the asthenosphere, transition zone and upper mantle for all 18 3D Earth structures.

The Earth structures were derived from seismic tomography models (Schaeffer & Lebedev 2013, 2010 update of Grand 2002) and, under consideration of geodynamic constrains, transferred to viscosity (Steinberger 2016, Steinberger & Calderwood 2006). The 18 Earth structures vary in conversion from seismic velocity to viscosity. Detailed description of the procedure can be found in the corresponding manuscript (Bagge et al. 2020a), where the Earth structure data were applied to the glacial-isostatic adjustment model VILMA (Klemann et al. 2008, 2015, Martinec et al. 2018) to predict the relative sea-level during the last deglaciation.

The netCDF files are provided on a Gaussian grid of 256x512 grid points. Each Earth structure consist of 167 layers, while lateral variations in Earth structure are considered for 114 layers between surface and 870 km depth and radially symmetric layers are considered for 50 layers from 870 km to the Earth’s core. The Earth structure is given as logarithmic viscosity in log10[Viscosity(Pa s)].

To visualize the global 3D structures, we calculated the lithospheric thickness and average viscosity of the asthenosphere, upper mantle and transition zone. The lithospheric thickness is defined as minimum depth with a viscosity < 10^23.5 Pa s, the asthenosphere is defined between the base of the lithosphere and 225 km depth, the upper mantle between 225 km and 410 km and the transition zone between 410 km and 670 km depth.